A228454 Gap g such that k*2^n-1 , k*2^n-1+g , k*2^n-1+2*g or k*2^n-1-g , k*2^n-1 , k*2^n-1+g are consecutive primes in arithmetic progression for the smallest prime k.

2, 12, 6, 6, 6, 6, 24, 6, 6, 12, 6, 30, 18, 6, 18, 6, 30, 6, 6, 36, 6, 18, 36, 12, 6, 6, 6, 6, 6, 72, 6, 6, 6, 6, 6, 6, 18, 6, 6, 60, 6, 12, 6, 12, 18, 6, 18, 6, 30, 30, 60, 48, 78, 36, 54, 78, 36, 6, 6, 54, 6, 54, 12, 78, 6, 108, 108, 30, 6, 60, 24, 48, 18, 6, 42

Offset

1,1

Comments

Primes k in A228452.

Links

Pierre CAMI, Table of n, a(n) for n = 1..350

Crossrefs

Cf. A228452.

Sequence in context: A239111 A112100 A079080 * A278255 A345469 A035877

Adjacent sequences: A228451 A228452 A228453 * A228455 A228456 A228457

Keyword

nonn

Author

Pierre CAMI, Oct 27 2013

Status

approved